Title:
AIR GUIDE RING OF AXIAL FLOW FAN AND AXIAL FLOW FAN
Document Type and Number:
WIPO Patent Application WO/2022/062832
Kind Code:
A1
Abstract:
An air guide ring of an axial flow fan and an axial flow fan. The air guide ring comprises an air guide cylinder (1); a pressure diffusion portion (2) extending outward on one end of the air guide cylinder (1); a plurality of guide vanes (3) uniformly arranged in the air guide cylinder (1) in the circumferential direction and having one end fixed on the inner wall of the air guide cylinder (1); and a protective net (4) comprising a plurality of connecting circular rings distributed in the radial direction of the air guide cylinder (1), each connecting circular ring comprising a plurality of circular arc segments (41); each circular arc segment (41) being connected between two adjacent guide vanes (3); the circular arc segments (41) being arranged in an inclined manner in the axial direction of the air guide ring. The air guide ring can reduce noise of the axial flow fan.
Inventors:
SONG WENJIE (CN)
GUO WEI (CN)
GUO WEI (CN)
Application Number:
PCT/CN2021/114953
Publication Date:
March 31, 2022
Filing Date:
August 27, 2021
Export Citation:
Assignee:
EBM PAPST VENTILATOR SHANGHAI CO LTD (CN)
International Classes:
F04D29/66; F04D29/54
Foreign References:
| CN207847996U | 2018-09-11 | |||
| CN112032110A | 2020-12-04 | |||
| CN212318379U | 2021-01-08 | |||
| CN108180154A | 2018-06-19 | |||
| CN201954719U | 2011-08-31 | |||
| DE202015102578U1 | 2015-07-14 | |||
| JP2008261280A | 2008-10-30 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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